Web Reference: Some String methods modify self. Typically, a method whose name ends with ! modifies self and returns self; often, a similarly named method (without the !) returns a new string. In the simplest case, the dumped string contains the original string, enclosed in double-quotes; this example is done in irb (interactive Ruby), which uses method inspect to render the results: We define an empty string as a string of zero length. You can check like this: Or even better, use the empty?method. Example: A blank string is a string that has either zero-length, or is composed ONLY of white space characters.
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